Package org.apache.groovy.ginq.dsl

Class GinqAstBuilder

java.lang.Object

org.codehaus.groovy.ast.CodeVisitorSupport

org.apache.groovy.ginq.dsl.GinqAstBuilder

All Implemented Interfaces:

SyntaxErrorReportable, GroovyCodeVisitor

public class GinqAstBuilder
extends CodeVisitorSupport
implements SyntaxErrorReportable

Build the AST for GINQ

Since:

4.0.0

Field Summary

Fields

Modifier and Type	Field	Description
static final String	GINQ_SELECT_DISTINCT	Metadata key marking select distinct.
static final String	ROOT_GINQ_EXPRESSION	Metadata key storing the root GINQ expression.

Constructor Summary

Constructors

Constructor	Description
GinqAstBuilder(SourceUnit sourceUnit)	Creates a builder for the supplied source unit.

Method Summary

Modifier and Type	Method	Description
AbstractGinqExpression	buildAST(ASTNode astNode)	Builds a GINQ AST from the supplied AST node.
SourceUnit	getSourceUnit()	Returns the source unit used for syntax reporting.
void	visitArgumentlistExpression(ArgumentListExpression expression)	Visits argument lists and replaces nested select expressions with built GINQ AST nodes.
void	visitBinaryExpression(BinaryExpression expression)	Visits binary expressions to wire nested GINQ expressions into filters.
void	visitCastExpression(CastExpression expression)	Visits cast expressions and substitutes nested GINQ expressions when needed.
void	visitDeclarationExpression(DeclarationExpression expression)	Visits declaration expressions and rejects assignments inside clause keywords.
void	visitMethodCallExpression(MethodCallExpression call)	Visits method-call expressions while assembling GINQ clauses.
void	visitPropertyExpression(PropertyExpression expression)	Visits property expressions and reports malformed aliases in select.
void	visitVariableExpression(VariableExpression expression)	Visits variable expressions and validates GINQ keywords.

Methods inherited from class org.codehaus.groovy.ast.CodeVisitorSupport

afterSwitchCaseStatementsVisited, afterSwitchConditionExpressionVisited, visitArrayExpression, visitAssertStatement, visitAttributeExpression, visitBitwiseNegationExpression, visitBlockStatement, visitBooleanExpression, visitBreakStatement, visitBytecodeExpression, visitCaseStatement, visitCatchStatement, visitClassExpression, visitClosureExpression, visitClosureListExpression, visitConstantExpression, visitConstructorCallExpression, visitContinueStatement, visitDoWhileLoop, visitEmptyStatement, visitExpressionStatement, visitFieldExpression, visitForLoop, visitGStringExpression, visitIfElse, visitLambdaExpression, visitListExpression, visitMapEntryExpression, visitMapExpression, visitMethodPointerExpression, visitMethodReferenceExpression, visitNotExpression, visitPostfixExpression, visitPrefixExpression, visitRangeExpression, visitReturnStatement, visitShortTernaryExpression, visitSpreadExpression, visitSpreadMapExpression, visitStaticMethodCallExpression, visitSwitch, visitSynchronizedStatement, visitTernaryExpression, visitThrowStatement, visitTryCatchFinally, visitTupleExpression, visitUnaryMinusExpression, visitUnaryPlusExpression, visitWhileLoop

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.codehaus.groovy.ast.GroovyCodeVisitor

visit, visit, visitEmptyExpression, visitListOfExpressions

Methods inherited from interface org.apache.groovy.ginq.dsl.SyntaxErrorReportable

collectSyntaxError

Field Details

ROOT_GINQ_EXPRESSION

public static final String ROOT_GINQ_EXPRESSION

Metadata key storing the root GINQ expression.

See Also:

• Constant Field Values

GINQ_SELECT_DISTINCT

public static final String GINQ_SELECT_DISTINCT

Metadata key marking select distinct.

See Also:

• Constant Field Values

Constructor Details

GinqAstBuilder

public GinqAstBuilder(SourceUnit sourceUnit)

Creates a builder for the supplied source unit.

Parameters:

sourceUnit - the source unit being processed

Method Details

buildAST

public AbstractGinqExpression buildAST(ASTNode astNode)

Builds a GINQ AST from the supplied AST node.

Parameters:

astNode - the node containing GINQ code

Returns:

the built GINQ expression

visitMethodCallExpression

public void visitMethodCallExpression(MethodCallExpression call)

Visits method-call expressions while assembling GINQ clauses.

Specified by:

visitMethodCallExpression in interface GroovyCodeVisitor

Overrides:

visitMethodCallExpression in class CodeVisitorSupport

Parameters:

call - the method call to visit

visitBinaryExpression

public void visitBinaryExpression(BinaryExpression expression)

Visits binary expressions to wire nested GINQ expressions into filters.

Specified by:

visitBinaryExpression in interface GroovyCodeVisitor

Overrides:

visitBinaryExpression in class CodeVisitorSupport

Parameters:

expression - the expression to visit

visitVariableExpression

public void visitVariableExpression(VariableExpression expression)

Visits variable expressions and validates GINQ keywords.

Specified by:

visitVariableExpression in interface GroovyCodeVisitor

Overrides:

visitVariableExpression in class CodeVisitorSupport

Parameters:

expression - the expression to visit

visitPropertyExpression

public void visitPropertyExpression(PropertyExpression expression)

Visits property expressions and reports malformed aliases in select.

Specified by:

visitPropertyExpression in interface GroovyCodeVisitor

Overrides:

visitPropertyExpression in class CodeVisitorSupport

Parameters:

expression - the expression to visit

visitDeclarationExpression

public void visitDeclarationExpression(DeclarationExpression expression)

Visits declaration expressions and rejects assignments inside clause keywords.

Specified by:

visitDeclarationExpression in interface GroovyCodeVisitor

Overrides:

visitDeclarationExpression in class CodeVisitorSupport

Parameters:

expression - the expression to visit

visitCastExpression

public void visitCastExpression(CastExpression expression)

Visits cast expressions and substitutes nested GINQ expressions when needed.

Specified by:

visitCastExpression in interface GroovyCodeVisitor

Overrides:

visitCastExpression in class CodeVisitorSupport

Parameters:

expression - the expression to visit

visitArgumentlistExpression

public void visitArgumentlistExpression(ArgumentListExpression expression)

Visits argument lists and replaces nested select expressions with built GINQ AST nodes.

Specified by:

visitArgumentlistExpression in interface GroovyCodeVisitor

Overrides:

visitArgumentlistExpression in class CodeVisitorSupport

Parameters:

expression - the expression to visit

getSourceUnit

public SourceUnit getSourceUnit()

Returns the source unit used for syntax reporting.

Specified by:

getSourceUnit in interface SyntaxErrorReportable

Returns:

the current source unit